Kev xaiv ntawm cov khoom siv txuas txuas yog qhov tseem ceeb, feem ntau yog siv siab - lub zog, xaiv 45 steel lossis 40Cr steel, uas dhau mus quenching thiab tempering los ua kom zoo dua qub thiab txhim khu kev cuam tshuam. Lub hardness ntawm cov hlau no yuav tsum tau tswj nyob rau hauv tej yam tshwj xeeb; Piv txwv li, lub hardness yuav tsum tau rau 45 steel yog HB217-293, thaum rau 40Cr steel nws yog HB223-280. Tsis tas li ntawd, cov khoom siv hlau thiab hmoov metallurgy thev naus laus zis kuj tseem siv los txuas cov pas nrig tsim los txo cov nqi raw khoom.
Thaum lub sij hawm ntau lawm, steel txuas pas nrig blanks feem ntau yog ua los ntawm forging, nyob rau hauv ob daim ntawv: ib tug yuav forging lub connecting pas nrig lub cev thiab lub hau nyias thiab ces assembling lawv; Lwm qhov cuam tshuam nrog kev sib txuas ntawm tus pas nrig lub cev thiab lub hau ua ib qho, tom qab ntawd txiav lossis siv cov txheej txheem tawg thaum lub sijhawm ua haujlwm. Nyob rau tib lub sijhawm, txhawm rau kom ntseeg tau tias cov khoom siv raw khoom zoo, 100% hardness ntsuas thiab ntsuas qhov tsis zoo yog qhov tseem ceeb.
